LG -D620 Service Manual page 148

EAR_SENSE_JACK
HPH_L_OUT
HPH_R_OUT
C6610 1n
FM_ANT
EAR_MIC_JACK
R6617 0
HPH_REF
TP4(L6610)
TP1(FB6600)
TP3(FB6612)
LGE Internal Use Only
TP4(L6610)
TP2(FB6611)
FB6601
1800
FB6611
0
FB6612 0
TP3(FB6612)
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3. TROUBLE SHOOTING
TP2(FB6611)
FB6600
TP1(FB6600)
Only for training and service purposes
J6600
S/W_Detect
SPK_L
SPK_R
GND
MIC
1800